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Finding the Fourth Proportional to 554,871.74, 765,725.64 and 313,164.50

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Solution

The fourth proportional to 554,871.74, 765,725.64 and 313,164.50 is: 432,168.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,871.74 : 765,725.64 = 313,164.50 : x
  2. Step 2: Convert to fraction form
    554,871.74/765,725.64 = 313,164.50/x
  3. Step 3: Cross multiply
    554,871.74x = 765,725.64 × 313,164.50
  4. Step 4: Simplify right side
    554,871.74x = 239,798,087,187.78
  5. Step 5: Solve for x
    x = 239,798,087,187.78/554,871.74
  6. Step 6: Final answer
    x = 432,168.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.